80166940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{457}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 197361360

約数和(自身を除く): 117194420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 179, 196, 245, 358, 457, 490, 716, 895, 914, 980, 1253, 1790, 1828, 2285, 2506, 3199, 3580, 4570, 5012, 6265, 6398, 8771, 9140, 12530, 12796, 15995, 17542, 22393, 25060, 31990, 35084, 43855, 44786, 63980, 81803, 87710, 89572, 111965, 163606, 175420, 223930, 327212, 409015, 447860, 572621, 818030, 1145242, 1636060, 2290484, 2863105, 4008347, 5726210, 8016694, 11452420, 16033388, 20041735, 40083470, 80166940]

約数ペア:

[(1, 80166940), (2, 40083470), (4, 20041735), (5, 16033388), (7, 11452420), (10, 8016694), (14, 5726210), (20, 4008347), (28, 2863105), (35, 2290484), (49, 1636060), (70, 1145242), (98, 818030), (140, 572621), (179, 447860), (196, 409015), (245, 327212), (358, 223930), (457, 175420), (490, 163606), (716, 111965), (895, 89572), (914, 87710), (980, 81803), (1253, 63980), (1790, 44786), (1828, 43855), (2285, 35084), (2506, 31990), (3199, 25060), (3580, 22393), (4570, 17542), (5012, 15995), (6265, 12796), (6398, 12530), (8771, 9140)]